To start the plugin, just add '-P rpihddevice' to the VDR command line.

The plugin simply adds two new dispmanx layers on top of the framebuffer, one for video and one for the OSD. The plugin does not clear the current console or change any video mode settings. So it's the user's choice, what's being displayed when no video is shown, e.g. during channel switches or for radio channels.

When set to default, the resolution/frame rate will not be changed and the plugin keeps the current setting of the framebuffer, normally set by the mode number in /boot/config.txt or changed with tvservice. To let the plugin automatically set a value matching the current video stream, choose follow video. In general, video setting are only applied if both, resolution and frame rate, fits to a video mode supported by the connected device, indicated by its EDID.

Video FramingDetermines how the video frame is displayed on the screen in case the aspect ratio differs. box and cut will preserve the video's aspect ratio, while box (often called letter box, however pillar box is used to show 4:3 videos on a wide screen) will fit the image on the screen by adding transparent borders. On the other hand, cut is cropping away the overlapping part of the video, so the entire display area is filled.When setting to stretch, the videos' aspect ratio is adapted to the screen and the resulting image might appear distorted.

Audio PortSet the audio output port to analog or HDMI. When set to analog out, multi channel audio is sampled down to stereo.

Digital Audio FormatSpecify the audio format when using the HDMI port as output. If set to pass through, (E)AC-3 and DTS audio can be decoded by the connected HDMI device, if EDID indicates specific codec support. For local decoding, select mutli channel PCM or Stereo PCM if additional stereo dowmix of mutli channel audio is desired.

Use GPU accelerated OSDUse GPU capabilities to draw the on screen display. Disable acceleration in case of OSD problems to use VDR's internal rendering and report error to the author.